@article{Alemam_Abuelsadat_Saber_Elsewify_2020, title={Accuracy, sensitivity and specificity of three imaging modalities in detection of separated intracanal instruments}, volume={34}, url={https://www.giornaleitalianoendodonzia.it/gie/article/view/118}, DOI={10.32067/GIE.2020.34.01.03}, abstractNote={<p><strong>Aim: </strong>To compare the accuracy, sensitivity and specificity of CBCT imaging and two dimensional periapical radiography in detection of separated intracanal endodontic instruments with and without root canal filling.</p> <p><strong>Methodology:  </strong>Eighty (n=80) extracted mandibular molars were randomly divided into four groups (n=20); control, fracture/non-filled, non-fracture/ filled, and fracture/filled.  Molars were placed in a mandible for imaging.  Conventional 2D radiography using D-speed periapical film (SKYDENT, Slovak Republic), semidirect digital radiographs using Soredex Digora Optime system (DIGORAOptime, Soredex, Finland), and cone beam computed tomography using Gendex-GXDP 800 (GENDEX GXDP-800 Kavo, Germany) were acquired.  An artifact reduction algorithm was applied.  Images were evaluated by three blinded examiners (two endodontists and one radiologist).  Qualitative examination for the presence/absence of separated instrument was performed according to a 5-point rank scale (1, definitely absent; 2, probably absent; 3, uncertainty; 4, probably present; and 5, definitely present).  Accuracy, sensitivity and specificity were calculated as well as inter-observer reliability. Statistical analysis was performed and significance level was set at 5%. </p> <p><strong>Results: </strong>Non-filled groups showed no significant difference between all three tested imaging modalities.  Filled groups showed statistically decreased accuracy and sensitivity of CBCT.  Good inter-observer agreement was shown. </p> <p><strong>Conclusion:  </strong>Conventional 2D radiography is a good tool for detection of intracanal separated instruments in filled canals.</p>}, number={1}, journal={Giornale Italiano di Endodonzia}, author={Alemam, Sara and Abuelsadat, Shaimaa and Saber, Shehabeldin and Elsewify, Tarek}, year={2020}, month={Jun.} }